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From "Kymair Wu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (OPENJPA-2429) NPE was thrown out when a @OrderBy modified column is being persisted.
Date Mon, 23 Sep 2013 06:42:02 GMT

     [ https://issues.apache.org/jira/browse/OPENJPA-2429?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kymair Wu updated OPENJPA-2429:
-------------------------------

    Description: 
Following NPE was thrown out when a @OrderBy modified column is being persisted.

{quote}
Caused by: java.lang.NullPointerException
        at org.apache.openjpa.datacache.DataCachePCDataImpl.clearInverseRelationCache(DataCachePCDataImpl.java:179)
        at org.apache.openjpa.datacache.DataCachePCDataImpl.storeField(DataCachePCDataImpl.java:159)
{quote}

I notice that getOrderDeclaration() of FieldMetaData will return null when both _orders and
_orderDec are null, which cause the NPE.

The only place _orders will be set after class initialization seems to be getOrders()? But
getOrders() is not involved for all the FieldMetaData of "fields[i].getInverseMetaDatas()"

I'm not sure whether this is a OpenJPA issue but whether this NPE should be handled internally?


Google returns a potential case but no more information found. See https://issues.apache.org/jira/browse/OPENJPA-2096?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
and http://mail-archives.apache.org/mod_mbox/openjpa-users/201006.mbox/%3C4C1BE781.9000406@cyberspaceroad.com%3E

Thanks!

  was:
Following NPE was thrown out when a @OrderBy modified column is being persisted.

Caused by: java.lang.NullPointerException
        at org.apache.openjpa.datacache.DataCachePCDataImpl.clearInverseRelationCache(DataCachePCDataImpl.java:179)
        at org.apache.openjpa.datacache.DataCachePCDataImpl.storeField(DataCachePCDataImpl.java:159)

I notice that getOrderDeclaration() of FieldMetaData will return null when both _orders and
_orderDec are null, which cause the NPE.

The only place _orders will be set after class initialization seems to be getOrders()? But
getOrders() is not involved for all the FieldMetaData of "fields[i].getInverseMetaDatas()"

I'm not sure whether this is a OpenJPA issue but whether this NPE should be handled internally?


Google returns a potential case but no more information found. See https://issues.apache.org/jira/browse/OPENJPA-2096?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
and http://mail-archives.apache.org/mod_mbox/openjpa-users/201006.mbox/%3C4C1BE781.9000406@cyberspaceroad.com%3E

Thanks!

    
> NPE was thrown out when a @OrderBy modified column is being persisted.
> ----------------------------------------------------------------------
>
>                 Key: OPENJPA-2429
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-2429
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: datacache
>    Affects Versions: 2.2.1
>         Environment: Windows 7
> WebSphere 8.5
>            Reporter: Kymair Wu
>
> Following NPE was thrown out when a @OrderBy modified column is being persisted.
> {quote}
> Caused by: java.lang.NullPointerException
>         at org.apache.openjpa.datacache.DataCachePCDataImpl.clearInverseRelationCache(DataCachePCDataImpl.java:179)
>         at org.apache.openjpa.datacache.DataCachePCDataImpl.storeField(DataCachePCDataImpl.java:159)
> {quote}
> I notice that getOrderDeclaration() of FieldMetaData will return null when both _orders
and _orderDec are null, which cause the NPE.
> The only place _orders will be set after class initialization seems to be getOrders()?
But getOrders() is not involved for all the FieldMetaData of "fields[i].getInverseMetaDatas()"
> I'm not sure whether this is a OpenJPA issue but whether this NPE should be handled internally?

> Google returns a potential case but no more information found. See https://issues.apache.org/jira/browse/OPENJPA-2096?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
and http://mail-archives.apache.org/mod_mbox/openjpa-users/201006.mbox/%3C4C1BE781.9000406@cyberspaceroad.com%3E
> Thanks!

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